Glass-blowing machine.



G. A. MAGBETH & H. A. SGHNELBAGH. GLASS BLOWING MACHINE.

ABXLIOATION FILED APR.30, 1907.

929,456., Patented July 27, 1,909.

2 SHEETS-SHEET .1..

r FIG. 1

G. A. MACBETH & H. A." SGHNELBAGH.

GLASS BLOWING MACHINE. APPLIGATIO'N FILED APR.30,1907.

929,456. Patented July 27, 1909.

Y zsHEBTs-SHBET 2. FIG. 2

se I se UN TED STATES PATENT OFFICE.

GEORGE A. MAGBE'IH, OF TITTSBURG, AND HARRY A. SCHNELBACH. OF GRAFTON, PENN- .SYLVANLM ASSIGNORS T() MACBETH-EVANS GLASS ,COMPANX OF PITTSBURG, PENN- SYLVANIA, A CORPORATION OEPENNSYLVANIA.

GLASS-BLGWING MACHINE Specification of Letters Patent.

Patented Juiy a7, 1909.

Application filed April 30, 1907. Serial N0.`371,031.

To all who/m 'ift may conc-era.'

Be it linown that we., GEORGE A. MAC-V BE'IH, a resident of Pittsl'mrg, in the county of Allegheny and State of .l enusylvania, and 5 li'iiinzi' A. Sonnets-wil, a resident of frafton, county and `State aforesaid, have invented a new anduseful improvement in Glass-Blfwingv Machines; and we do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to a'r ai'a;us for blowing' articles of glass ware.'

1n the mainifacture of articles of ,s'l ass ware of any considerable size, such as elect-rie outer ai'c` globes, it is necessary,duringthe blowing' operation for the blower to reverse the direction of rotation of the blow pipe for the reason that if the rotation is all in one direction, owing; to the size of the article, the upper or neck portion will be twisted and distoi-ted so as to produc-,e a defective pieee of As a roiisequeinn, these large articles of blown `eglass ware have hitherto been made by hand, as no machine had been devised by means of which the bloat' pipe could be automatically ievcrsed i as to' produce the saine cll'cct as when the blow i;

'ze inthe hand of the operator is reversed to produce a perfectly formed article.

One of the objects of our invention is to provide a machiney for the manufacture of these larger sized articles in which dii'ection of the rotation of tho blow xpipe may be rcvcrsod so as to forni a perfectly shaped article without the twisting or distortion of the neck oi' upper portion of the saine.

four invention is to provide means for readily closing or opening* the mold without any effort on the part of the A further ohes't o operator.

To these ends our invention comprises the novel features hercinalter set forth and elain'ied supports.

Oui' invention has been applied to a coinmon type of frame for glass blowing appaia tus in whiohthero is a pillar orv standard 2 at the lower end of which is the i'oller 3.

Pro-

jecting from said standard and supported by rollers 4, is thel base or platform 5. Mounted upon the pillar 2 is the ovcrhanig'ing frame or bracket 6, said bracket being` mounted in guides 7 on said pillar. Said overhanginfg; fraino 6 is adjustable up and down in said guides 7 by ineans of the pinion 8 on said G0v frame engaging' the rack 9 on said pillar A worin 10 on the shaft 11 engages the worin wheel 12 on the shaft 13 carrying' the. pinion S. A hand wheel 14 is provided for the worin shaft 11 and by turning said hand 65 wheel, it is apparent that the frame (5 may bo raised and lowered as desired for the artic-les of different height.

Supported on the shelf 15 of the frame is a suitable motor 16 and on the inotor shaft 70 17 are the pulleys 1S and 1Q. Belts 2() and 21 connect the pulleys 18 and. 19 with the loose 'pulleys 22 and 23 respectively. '.lhe belt 2() is twisted so as to drive the pulley 222' in the opposite direction from the pulley 2?. 7 5 These pulleys Z2 and 23 havev the tapering inner faces 24 and 25 which form friction' faces for the double-cone friction pulley '26 provided with correspondingly beveled or tapering' faces 27 and 2S. As stated, the 80 pulleys 22 and 23 ai'e loosely mounted on the, shaft 29, said pulleys having' the sleeves 3U and 31 which rest in bearings 32 in brackets 33. The friction pulley 26 is keyed to the shaft 29 by the key 34. S5 Rig'idly secured to the shaft 29 is the fear wheel 35 which meshes with the gear wheel 36 on the eoiniter shaft 37. A worin 3S on the shaft 37 meshes with the worin wheel 39. T he worin 38e and worm wheel 2S) are incased 90 by the easing; 40. The Worin wheel 39 is keyed tothe blew-pipe or hollow shaft 4]. At the upper end of said shaft 41 is the collar 42 adapted to nieve up and down on said shaft and provided with the lugs 43 and 44 at 95 opposite sides thereof. A forked arin 45 engages the collar 42, said arin being pivoted at 46 to the upright 47. A rod 4S is connected 'to the arm 45, the lower end of said rod being secured to the lever 49 pivoted at 100 5() to the support 51. The outer end of the .lever 4) is provided With the handle 52.

being connected up atits opposite end to the t with rollers 97 in the guide way 95 and pipe 56 provided with the-valve57. 'A tube 58 is connected up to the valve 57, said tube 58 leading to a suitable an' compressor byA means of which air is supplied for the blowing operation as hereinaiter set forth.

Secured to one end ot the shaft 2.() is the yoke 59 and through openings in said yokeV the crank lever 67, the pivotal pin 68 engage ing the elongated opening' 69 in said arm 66 to allow for the proper` play of the liifurcated lever 61. The crank lever 67 is pivotcd at 70 to the bracket 71 on the frame 6 and the free end of said crank lever 67 is in the path of the lugs 43 and 44 of lthe collar 42 when said collar is lowered by the hand lever 49 as hereinafter set forth.

An arm 72 is pivoted to the frame 6 at 73, the outer end of said arm being forked and engaging the mouth piece 74 which'is keyed l to move up and down on the blow-pipe or lio hollow shaft 41. This mouth piece is of the ordinary forni which is adapted to receive the upper end of the blow pipe proper 75 and which is adapted to form a tight connec tion between the hollow shaft 41 and said blow pipe while at the same time said mouth piece rotates with said blow pipe. The inner end of the arm 72 is connected to the rod 76 which is secured at its lower end to the arm 77 of the crank 78 pivoted at 7 9 to the shelf 80. Another arm 81 of the crank 78 is cone nected to the valve rod 82 which operates a suitable valve within the valve chamber 83 for the purpose hereinafter fully set forth.

An" arm 84is connected to the crank 78 and connected to said arm is the rod 85 con-` nected to the lever 86. This lever S6 is pivoted at 87 and its movement is controlled by the stops S8.

Carried by the shelf 51 are the blow pipe holding arms 89 which are of the ordinary construction as illustrated in Fig. 4, connected at their inner ends by the spring Q0. lliese arms are adapted to receve and hold the blow pipe in a vertical position during the blowing operation. A further support for the blowpipe during the blowing operation is provided at the outer end of the shelf 80. In this support are beveled idler rollers 91, which support the beveled faee92 of the enlargement 93 on the blow pipe. This is a common form of support and as no novelty is claimed for it, it needs ,no further description. A

Secured to the base 5 is the plate 94, said plate having the curved guide way 95 along its frontedgel and the curved guide Ways 96 at the rear thereof. Resting on the plate 94 rollers 98 in the guide ways 96isthe partible mold hase 99. The parts of said mold hase are pivoted at 1004 so as to swing from that point. Secured tol this-partible mold base 99 is the mold 101, the parts of said mold being secured together by the hinge 102 in line with the pivot point 100 of the mold base.

` Each half of the mold 101 is secured to the corresponding half of the mold base by means of the flanges 103 secured to said mold base by the bolts 104. Pivoted to the lugs 105 on each half of the mold hase are the links 106, the 'opposite ends of said links being connected to the piston rod 107 ol the cyl'nder 10S. Leading-to opposite sides of the plunger of the fluid operated cylinder 108 are the inlets and outlets 10S) and connected to said inlets and outlets are the flexible pipes 110 which are connected up to the valve 83. Leading to the valve 8?, is the main supply tube 111` The valve 83 admits fluid to one or the other of the tubes 110 aecording to the movement of the lever 86 so as-to supply iluid for opening and closing the mold.

rilhen our improved apparatus is in use, the operator opens the mold by moving' the lever 86 so as to admit iluid to the cylinder 108, whereupon said mold is opened, the partible mold base separating and the mold has carried thereby the rollers 07 and .0S traveling readily over the guide ways provided therei'or and relieving the friction as well as the power necessary to efect'the opening of the mold. With the mold in the open position the punty or blow pipe proper carrying` the molten glass is inserted into position so as to bring the glass into [')ifoper position with reference to the mold. By the same movement of the lever S6 which lopened the mold, the rod 76 is lowered and the outer end oi' the arm A72 lifted so as vto raise the mouth piece 74 to permit of the upper end oil the blow pipe being inserted within the mouth piece to 'form the connection between the hollow shalt 41 and said blow iipe. As soon as the blow pipe'has been iiXed in position in this manner with the molten glass within the mold and the blow pipe engaged by the arms 89 and resting on the rollers 91, the operator then throws the lever 86 in the opposite direction'whereu pon the iluid is directed to the opposite side, oi the llli ` tion.

. and through it the shaft 29.

blow pipe will be rotating in the same direc- In the manufacture of large articles of glass ware, such as outer arc light globes, it will be necessary to reverse the direction yof rotation of the blow pipe from time to time to prevent the twisting and distorting of the glass in the mold. Accordingly, the operator with his hand upon the lever 49 forces down said lever and thereby draws down on the rod 48 which lowers the arm 45, carrying the collar 42. As said collar is low-l ered, the lugs 43 and 44 are brought into position to come in contact with the crank lever 67. When, therefore, said collar is lowered, the lug 43 will come in contact with the crank lever 67 and will act to move said lever so as to advance the bifureated arm 61 This movement ofthe shaft 29 will throw the beveled face 27 of the friction pulley 26 into contact with the beveled face 25 ofthe pulley 22. This will act to reverse the direction of rotation of the shaft 29 and through the connections described Will reverse the direction of rotation of the worin wheel 39 and consequently of the blow-pipe. The operator, with his hand upon the lever 49, vcan readily control the direction of rotation of the blow-pipe. Having reversed the direction of the worm wheel 39 from that indicated by the arrow in Fig. 2, the lug 44 will come around into engagement with the crank lever 67 and operate said crank lever so as to withdraw the frictional pulley from engagement with the pulley 24 and throw it into engagement with the pulley '25, whereupon said worm wheel will again rotate in the direction of the arrow in Fig. 2. As long, therefore, as the operator .with his hand on the lever 49 holds the collar 42 down in position where the lugs 43 and 44 can come in contact with the crank lever 67,

\ the reversal of the blow pipe will take place i' hand of the blower.

automatically. In this manner the reversal of direction of rotation of the blow pipe during the blowing operation prevents the twisting or distorting of the glass in the mold and tlhe sameresults are obtained as in hand work where the blow ipe is reversed by the Lhe springs (S2-and 64 offersufiicient resistance to provide for the movement of the shaft 29 whenthe crank ,lever 67vis moved, but as soon as the fricthe mold, whereupon the blow pipe can be removed together with the article of glass Ware blown in the mold.

By having the mold mounted upon a partible mold base with friction rollers moving upon the plate 94, the power required to open the mold is greatly reduced while at the same time by applying the power in the manner indicated no exertion is required on the part of the operator to open the mold or close it other than the movement of the lever 86.

What we claim is:

l. In glass blowing apparatus, the combination of a suitable frame, of a mold, a blow pipe, means for supplying air thereto, a power driven shaft, connections between said shaft and said blow pipe to rotate the same, shaft reversing mechanism, and automatic means for operating said shaft reversing mechanism by the rotation of said blow pipe.

2. In glass blowing apparatus, the combination of a suitable frame, a mold, a blowpipe, means for supplying air thereto, a power driven shaft, connections between said shaft and said blow-pipe to rotate the same, and means carried by the blow-pipe to trip the reversing mechanism.

3. In glass blowing apparatus, the combination of a suitablel frame, a1 molivl alblow i e means for su infr air t iereto, a ongilfudiiially movabllslliraft, mechanism for reverein said shaft by the longitudinalmovement tliereof, connections between said shaft and said blow pipe, and means for longitudinallymoving said Ishaft by the rotation of' said blow pipe` 4. In glass blowing apparatus, the combination of a suitable frame, of a mold, a blow pipe, means for supplying air thereto, a longitudinally movable shaft, a double cone 4 pulley on said shaft, frictional-power pulleys oppositely driven., connections between said shaft and said blow pi e, and means for lon gitudinally moving sald shaft to throw said double cone ulley automatically into en- 1gagement witli one ortheother of said puleys.

5. In glass blowing apparatus, the combination of a suitable frame, a mold, a blow pipe, means for supplying air thereto, alongitudinally movable shaft, connections' between said shaft and said blow pipe, a double cone pulley carried by said shaft, oppositely driven friction pulleys 'with which' said cone pulley is adapted to be engaged, an arm, connections'betwe'en said arm and said shaft, a collar carried by said blow pipe, projections on said collar and means for lowering said collar to bring said projections into contact with said `trm to move said shaft, whereby said shaft is automatically reversed.

6. In glass blowing apparatus, the combination of a suitable fraaie, a mold, a blow pipe, means for supplying a irthereto, a ln vgitudinally movable shaft, a double friction cone carried by said shaft, oppositely driven frictional pulleys adapted toengage said cone, connections between said shaft and said blow pipe, an arm, connections between.I said arm and said shaft to move the same longitudinally, a spring aetuated veollar on said blow pipe having projections, and means y eone on said shaft, oppositely driven frietional pulleys adaptedto engage said eene, a yoke on said shaft, bifureated arm engaging said yoke, springs on said arm at opposite sides of said yoke bearing against said lyoke, and suitable abutments on said arm, a crank lever connected to said arm, and means for` moving said crank lever in opposite directions by the rotation of said blow pipe.

8. In glass blowing apparatus, the combination oi' a suitable frame, a mold, a blow pipe, means for supplying air thereto, a

" driven shalt, a worm driven by said shal't, a.

worm wheel carried by said blow pipe with wlneh said worm engages, and automatic mechanism for reversing the direction ol' rotation oi' said first named tion of said blow pipe.

9. lIn glass blowing apparatus, the combination oi a suitable frame, a meld, a blow pipe, means l'or supplying air thereto, a movable eollar carried by said blow pipe, apower shalt by the rotae driven shalt, connections between said shaft and said blow pipe, shaft reversing mechanism, and means for lowering said collar into engagement with said shaft reversing nieehanism whereby said shal't reversing mechanism is operated automatically.

10. In glass blowing apparatus, the combination ol' a l'rame, a mold, a blow pi e, means for supplying air thereto, a mova le collar carried by said blow pipe having projeetions thereon, a power driven shalt, connections between said shal't and said blow pi e, shaft reversing mechanism, and means 'l'or ringing said projections inte engagement with said shalt reversing meehani'sn l l. In glass blowing apparatus, the combination of a frame, a mold, a blow pipe, means for supplying air thereto, a movable revers- .ing member carried by said blow pipe, a power driven shal't, connections between said shal't and blow pipe, shaft reversing' mechanism, a lever and connections between said' lever and said reversing member to bring same into engagement with said reversmer mechanism. p

' l2. .n glass blowing apparatus, the. combination olr a suitable trame, a mold, a blow pipe, means l'orsupplying air thereto, a movable reversing member carried by said-blew pipe, a power driven shalt, eonneetions between said sha'l't and said blow pipe, shaft reversing mechanism, and means for bringing said reversing rnernber'into engagement with said shaft reversing mechanism.

13. Inglass blowing api'iaratus, the combination ol a suitable iran'ie, a partible mold, a hinffed partible base plate on whieh said mo d is mounted, and mechanism lor opening and closing said partible base.

14. In. glass blowing apparatus, the combination ol a suitable l'rame, a partible mold, a hiiwed partible base plate on which said mo d is mounted, a iluid eylinder, and oonneetions between said fluid operated Cylinder and said base to open and close the same,

15. In glass blowing apparatus, the combination ol' a suitable frame, a partible mold, a hinged partible base plate on which said mold isl mounted, a platform', and frietional rollers on said partiblebase resting on said platform.

16. In glass blowing apparatus, the combination ol a suitable frame, a partible mold, a

partible base plate forming support for said.

nold, a platform having curved guide ways thereon, and rollers on said partible base plate engaging said guide ways.

17. In glass blowing ap aratus, the combination oll a frame, a parti le mold, a partible base on which said mold is mounted, meehanism ior opening and. closing said partible base, a blow pipo, a movable mouth piece on said blow pipe, a lever, and eonneetionsbetween said lever and said mold opening and closing meehanism, and betweensaid lever and said mouth piece, whereby said mechanism and said mouth piece are operated simultaneously. i

In testimony whereof, we the said GEORGE JI; Unenmn and HARRY Af SonN-nLnAou have hereunto sot our hands.

GEORG-E A. MACBE'III. HAR-lt Y A SCHNELBACII Witnesses Ro'r. D. To'r'rEN, Ronnn'r C. 'lo'r'rniv 

